Warning level 4 on VC++8 produces warning C4512

When switching on Warning level 4 (-W4) we encounter warnings produced by the qt-library

• warning C4512: 'QtConcurrent::BlockSizeManager' : assignment operator could not be generated
• warning C4512: 'QForeachContainer<T>' : assignment operator could not be generated

They all reference the C4512 - which can be removed -> provide an assignement operator or remove the const for the member:
-> BlockSizeManager: const int maxBlockSize;
-> QForeachContainer: const T c;

Our goal is to compile our software warning free at level 4.
Of course we could patch this, but this means patch and compile for a lot of colleagues and every coming version.
The onyl alternative we see it to have this warning globally disabled.